From aa512f0b26452854c9e8c79395362cb90d81315c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Xose=20P=C3=A9rez?= <xose.perez@gmail.com>
Date: Mon, 15 Jan 2018 19:27:08 +0100
Subject: [PATCH] Secondary Serial RX port for H801 and H802 boards (thanks to
 Pablo Pousada Rial)

---
 code/espurna/config/general.h  | 11 +++++++++++
 code/espurna/config/hardware.h |  2 ++
 code/espurna/settings.ino      | 33 ++++++++++++++++++++++++++++++++-
 3 files changed, 45 insertions(+), 1 deletion(-)

diff --git a/code/espurna/config/general.h b/code/espurna/config/general.h
index 57cf9c66..fb73e37d 100644
--- a/code/espurna/config/general.h
+++ b/code/espurna/config/general.h
@@ -64,6 +64,17 @@
 #define SERIAL_BAUDRATE         115200          // Default baudrate
 #endif
 
+// Second serial port (used for RX)
+
+//#define SERIAL_RX_PORT        Serial			// This setting is usually defined
+												// in the hardware.h file for those
+												// boards that require it
+
+#ifndef SERIAL_RX_BAUDRATE
+#define SERIAL_RX_BAUDRATE      115200          // Default baudrate
+#endif
+
+#define SERIAL_RX_BUFFER_SIZE   32
 
 //------------------------------------------------------------------------------
 
diff --git a/code/espurna/config/hardware.h b/code/espurna/config/hardware.h
index f19a3426..5053c775 100644
--- a/code/espurna/config/hardware.h
+++ b/code/espurna/config/hardware.h
@@ -927,6 +927,7 @@
     #define LIGHT_PROVIDER      LIGHT_PROVIDER_DIMMER
     #define DUMMY_RELAY_COUNT   1
     #define DEBUG_PORT          Serial1
+    #define SERIAL_RX_PORT      Serial
 
     // LEDs
     #define LED1_PIN            5
@@ -954,6 +955,7 @@
     #define LIGHT_PROVIDER      LIGHT_PROVIDER_DIMMER
     #define DUMMY_RELAY_COUNT   1
     #define DEBUG_PORT          Serial1
+    #define SERIAL_RX_PORT      Serial
 
     // Light
     #define LIGHT_CHANNELS      4
diff --git a/code/espurna/settings.ino b/code/espurna/settings.ino
index 3e06865f..822d30fd 100644
--- a/code/espurna/settings.ino
+++ b/code/espurna/settings.ino
@@ -28,6 +28,13 @@ Copyright (C) 2016-2018 by Xose Pérez <xose dot perez at gmail dot com>
     #endif
 #endif
 
+#if TERMINAL_SUPPORT
+#ifdef SERIAL_RX_PORT
+    char _serial_rx_buffer[SERIAL_RX_BUFFER_SIZE];
+    static unsigned char _serial_rx_pointer = 0;
+#endif
+#endif
+
 bool _settings_save = false;
 
 // -----------------------------------------------------------------------------
@@ -403,14 +410,38 @@ void settingsSetup() {
     DEBUG_MSG_P(PSTR("[SETTINGS] EEPROM size: %d bytes\n"), SPI_FLASH_SEC_SIZE);
     DEBUG_MSG_P(PSTR("[SETTINGS] Settings size: %d bytes\n"), _settingsSize());
 
+    #if TERMINAL_SUPPORT
+        #ifdef SERIAL_RX_PORT
+            SERIAL_RX_PORT.begin(SERIAL_RX_BAUDRATE);
+        #endif
+    #endif
+
 }
 
 void settingsLoop() {
+
     if (_settings_save) {
         EEPROM.commit();
         _settings_save = false;
     }
+
     #if TERMINAL_SUPPORT
+
         embedis.process();
-    #endif
+
+        #ifdef SERIAL_RX_PORT
+
+            while (SERIAL_RX_PORT.available() > 0) {
+                char rc = Serial.read();
+                _serial_rx_buffer[_serial_rx_pointer++] = rc;
+                if ((_serial_rx_pointer == SERIAL_RX_BUFFER_SIZE) || (rc == 10)) {
+                    settingsInject(_serial_rx_buffer, (size_t) _serial_rx_pointer);
+                    _serial_rx_pointer = 0;
+                }
+            }
+
+        #endif // SERIAL_RX_PORT
+
+    #endif // TERMINAL_SUPPORT
+
 }